Osteogenin
成骨素
🗣️ 情景例句
Sure.
当然。
Why tell you?
没必要对你说。
but when she got out at her own floor, both were forgotten in her sudden discovery that her front door was open.
但她到自己的楼层走出电梯后，就把这两件事忘了个干净，因为她突然发现她家的大门开着。